Physics in Kotlin
A simple physics simulator with ECS architecture (entity component system).
Keywords
kotlin simulation 2d physics ecs entity component system
Entity & Components
An entity is basically a composition of components.
- Shape (Interface) with a color
- Circle (with a radius)
- Collider of “merge” or “elastic” type and with a weight – used by collision system. If two objects has the same collider type they are either merged or bounce during a a collision
- Destructor – if other objects collide with this one they disappear
- GravitySource with a strength – pull other objects which have Velocity component available
- Velocity – used by position system to change… the positon of an object
- Position – the position of an object
Systems
A system changes the state of an entity. Implemented systems:
- CollisionSystem (merges or make object bounce from each other after the collision)
- DestructionSystem (remove objects)
- GravitationalSystem (pull objects together)
- PositionSystem (calculates posiotion for moving objects)
